skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Mass, quark-number, and sqrt sNN dependence of the second andfourth flow harmonics in ultra-relativistic nucleus-nucleuscollisions

Abstract

We present STAR measurements of the azimuthal anisotropyparameter v_2 for pions, kaons, protons, Lambda, bar Lambda, Xi+bar Xi,and \Omega + bar Omega, along with v_4 for pions, kaons, protons, andLambda + bar Lambda at mid-rapidity for Au+Au collisions at sqrt sNN=62.4and 200 GeV. The v_2(p_T) values for all hadron species at 62.4 GeV aresimilar to those observed in 130 and 200 GeV collisions. For observedkinematic ranges, v_2 values at 62.4, 130, and 200 GeV are as little as10 percent-15 percent larger than those in Pb+Pb collisions at sqrt s NN=17.3 GeV. At intermediate transverse momentum (p_T from 1.5-5 GeV/c),the 62.4 GeV v_2(p_T) and v_4(p_T) values are consistent with thequark-number scaling first observed at 200 GeV. A four-particle cumulantanalysis is used to assess the non-flow contributions to pions andprotons and some indications are found for a smaller non-flowcontribution to protons than pions. Baryon v_2 is larger than anti-baryonv_2 at 62.4 and 200 GeV perhaps indicating either that the initialspatial net-baryon distribution is anisotropic, that the mechanismleading to transport of baryon number from beam- to mid-rapidity enhancesv_2, or that anti-baryon and baryon annihilation is larger in thein-plane direction.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
COLLABORATION - Brookhaven NationalLaboratory
OSTI Identifier:
932581
Report Number(s):
LBNL-63643
TRN: US0803567
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review C; Journal Volume: 75; Related Information: Journal Publication Date: 2007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANISOTROPY; ANNIHILATION; BARYON NUMBER; BARYONS; DISTRIBUTION; HADRONS; HARMONICS; KAONS; PIONS; PROTONS; TRANSPORT; TRANSVERSE MOMENTUM

Citation Formats

Abelev, B.I., Adams, J., Aggarwal, M.M., Ahammed, Z., Amonett,J., Anderson, B.D., Anderson, M., Arkhipkin, D., Averichev, G.S., Bai,Y., Balewski, J., Barannikova, O., Barnby, L.S., Baudot, J., Bekele, S., Belaga, V.V., Bellingeri-Laurikainen, A., Bellwied, R., Benedosso, F., Bhardwaj, S., Bhasin, A., Bhati, A.K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L.C., Blyth, S.-L., Bonner, B.E., Botje, M., Bouchet, J., Brandin, A.V., Bravar, A., Bystersky, M., Cadman, R.V., Cai,X.Z., Caines, H., Calderon de la Barca Sanchez, M., Castillo, J., Catu,O., Cebra, D., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen,H.F., Chen, J.H., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Coffin, J.P., Cormier, T.M., Cosentino, M.R., Cramer, J.G., Crawford,H.J., Das, D., Das, S., Daugherity, M., de Moura, M.M., Dedovich, T.G., DePhillips, M., Derevschikov, A.A., Didenko, L., Dietel, T., Djawotho,P., Dogra, S.M., Dong, W.J., Dong, X., Draper, J.E., Du, F., Dunin, V.B., Dunlop, J.C., Dutta Mazumdar, M.R., Eckardt, V., Edwards, W.R., Efimov,L.G., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Fachini, P., Fatemi, R., Fedorisin, J., Filimonov, K., Filip, P., Finch,E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C.A., Gaillard, L., Ganti,M.S., Ghazikhanian, V., Ghosh, P., Gonzalez, J.S., Gorbunov, Y.G., Gos,H., Grebenyuk, O., Grosnick, D., Guertin, S.M., Guimaraes, K.S.F.F., Guo,Y., Gupta, N., Gutierrez, T.D., Haag, B., Hallman, T.J., Hamed, A., Harris, J.W., He, W., Heinz, M., Henry, T.W., Hepplemann, S., Hippolyte,B., Hirsch, A., Hjort, E., Hoffman, A.M., Hoffmann, G.W., Horner, M.J., Huang, H.Z., Huang, S.L., Hughes, E.W., Humanic, T.J., Igo, G., Jacobs,P., Jacobs, W.W., Jakl, P., Jia, F., Jiang, H., Jones, P.G., Judd, E.G., Kabana, S., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Khodyrev, V.Yu., Kim, B.C., Kiryluk, J., Kisiel, A., Kislov, E.M., Klein,S.R., Kocoloski, A., Koetke, D.D., and et al.. Mass, quark-number, and sqrt sNN dependence of the second andfourth flow harmonics in ultra-relativistic nucleus-nucleuscollisions. United States: N. p., 2007. Web. doi:10.1103/PhysRevC.75.054906.
Abelev, B.I., Adams, J., Aggarwal, M.M., Ahammed, Z., Amonett,J., Anderson, B.D., Anderson, M., Arkhipkin, D., Averichev, G.S., Bai,Y., Balewski, J., Barannikova, O., Barnby, L.S., Baudot, J., Bekele, S., Belaga, V.V., Bellingeri-Laurikainen, A., Bellwied, R., Benedosso, F., Bhardwaj, S., Bhasin, A., Bhati, A.K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L.C., Blyth, S.-L., Bonner, B.E., Botje, M., Bouchet, J., Brandin, A.V., Bravar, A., Bystersky, M., Cadman, R.V., Cai,X.Z., Caines, H., Calderon de la Barca Sanchez, M., Castillo, J., Catu,O., Cebra, D., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen,H.F., Chen, J.H., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Coffin, J.P., Cormier, T.M., Cosentino, M.R., Cramer, J.G., Crawford,H.J., Das, D., Das, S., Daugherity, M., de Moura, M.M., Dedovich, T.G., DePhillips, M., Derevschikov, A.A., Didenko, L., Dietel, T., Djawotho,P., Dogra, S.M., Dong, W.J., Dong, X., Draper, J.E., Du, F., Dunin, V.B., Dunlop, J.C., Dutta Mazumdar, M.R., Eckardt, V., Edwards, W.R., Efimov,L.G., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Fachini, P., Fatemi, R., Fedorisin, J., Filimonov, K., Filip, P., Finch,E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C.A., Gaillard, L., Ganti,M.S., Ghazikhanian, V., Ghosh, P., Gonzalez, J.S., Gorbunov, Y.G., Gos,H., Grebenyuk, O., Grosnick, D., Guertin, S.M., Guimaraes, K.S.F.F., Guo,Y., Gupta, N., Gutierrez, T.D., Haag, B., Hallman, T.J., Hamed, A., Harris, J.W., He, W., Heinz, M., Henry, T.W., Hepplemann, S., Hippolyte,B., Hirsch, A., Hjort, E., Hoffman, A.M., Hoffmann, G.W., Horner, M.J., Huang, H.Z., Huang, S.L., Hughes, E.W., Humanic, T.J., Igo, G., Jacobs,P., Jacobs, W.W., Jakl, P., Jia, F., Jiang, H., Jones, P.G., Judd, E.G., Kabana, S., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Khodyrev, V.Yu., Kim, B.C., Kiryluk, J., Kisiel, A., Kislov, E.M., Klein,S.R., Kocoloski, A., Koetke, D.D., & et al.. Mass, quark-number, and sqrt sNN dependence of the second andfourth flow harmonics in ultra-relativistic nucleus-nucleuscollisions. United States. doi:10.1103/PhysRevC.75.054906.
Abelev, B.I., Adams, J., Aggarwal, M.M., Ahammed, Z., Amonett,J., Anderson, B.D., Anderson, M., Arkhipkin, D., Averichev, G.S., Bai,Y., Balewski, J., Barannikova, O., Barnby, L.S., Baudot, J., Bekele, S., Belaga, V.V., Bellingeri-Laurikainen, A., Bellwied, R., Benedosso, F., Bhardwaj, S., Bhasin, A., Bhati, A.K., Bichsel, H., Bielcik, J., Bielcikova, J., Bland, L.C., Blyth, S.-L., Bonner, B.E., Botje, M., Bouchet, J., Brandin, A.V., Bravar, A., Bystersky, M., Cadman, R.V., Cai,X.Z., Caines, H., Calderon de la Barca Sanchez, M., Castillo, J., Catu,O., Cebra, D., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., Chen,H.F., Chen, J.H., Cheng, J., Cherney, M., Chikanian, A., Christie, W., Coffin, J.P., Cormier, T.M., Cosentino, M.R., Cramer, J.G., Crawford,H.J., Das, D., Das, S., Daugherity, M., de Moura, M.M., Dedovich, T.G., DePhillips, M., Derevschikov, A.A., Didenko, L., Dietel, T., Djawotho,P., Dogra, S.M., Dong, W.J., Dong, X., Draper, J.E., Du, F., Dunin, V.B., Dunlop, J.C., Dutta Mazumdar, M.R., Eckardt, V., Edwards, W.R., Efimov,L.G., Emelianov, V., Engelage, J., Eppley, G., Erazmus, B., Estienne, M., Fachini, P., Fatemi, R., Fedorisin, J., Filimonov, K., Filip, P., Finch,E., Fine, V., Fisyak, Y., Fu, J., Gagliardi, C.A., Gaillard, L., Ganti,M.S., Ghazikhanian, V., Ghosh, P., Gonzalez, J.S., Gorbunov, Y.G., Gos,H., Grebenyuk, O., Grosnick, D., Guertin, S.M., Guimaraes, K.S.F.F., Guo,Y., Gupta, N., Gutierrez, T.D., Haag, B., Hallman, T.J., Hamed, A., Harris, J.W., He, W., Heinz, M., Henry, T.W., Hepplemann, S., Hippolyte,B., Hirsch, A., Hjort, E., Hoffman, A.M., Hoffmann, G.W., Horner, M.J., Huang, H.Z., Huang, S.L., Hughes, E.W., Humanic, T.J., Igo, G., Jacobs,P., Jacobs, W.W., Jakl, P., Jia, F., Jiang, H., Jones, P.G., Judd, E.G., Kabana, S., Kang, K., Kapitan, J., Kaplan, M., Keane, D., Kechechyan, A., Khodyrev, V.Yu., Kim, B.C., Kiryluk, J., Kisiel, A., Kislov, E.M., Klein,S.R., Kocoloski, A., Koetke, D.D., and et al.. Sat . "Mass, quark-number, and sqrt sNN dependence of the second andfourth flow harmonics in ultra-relativistic nucleus-nucleuscollisions". United States. doi:10.1103/PhysRevC.75.054906. https://www.osti.gov/servlets/purl/932581.
@article{osti_932581,
title = {Mass, quark-number, and sqrt sNN dependence of the second andfourth flow harmonics in ultra-relativistic nucleus-nucleuscollisions},
author = {Abelev, B.I. and Adams, J. and Aggarwal, M.M. and Ahammed, Z. and Amonett,J. and Anderson, B.D. and Anderson, M. and Arkhipkin, D. and Averichev, G.S. and Bai,Y. and Balewski, J. and Barannikova, O. and Barnby, L.S. and Baudot, J. and Bekele, S. and Belaga, V.V. and Bellingeri-Laurikainen, A. and Bellwied, R. and Benedosso, F. and Bhardwaj, S. and Bhasin, A. and Bhati, A.K. and Bichsel, H. and Bielcik, J. and Bielcikova, J. and Bland, L.C. and Blyth, S.-L. and Bonner, B.E. and Botje, M. and Bouchet, J. and Brandin, A.V. and Bravar, A. and Bystersky, M. and Cadman, R.V. and Cai,X.Z. and Caines, H. and Calderon de la Barca Sanchez, M. and Castillo, J. and Catu,O. and Cebra, D. and Chajecki, Z. and Chaloupka, P. and Chattopadhyay, S. and Chen,H.F. and Chen, J.H. and Cheng, J. and Cherney, M. and Chikanian, A. and Christie, W. and Coffin, J.P. and Cormier, T.M. and Cosentino, M.R. and Cramer, J.G. and Crawford,H.J. and Das, D. and Das, S. and Daugherity, M. and de Moura, M.M. and Dedovich, T.G. and DePhillips, M. and Derevschikov, A.A. and Didenko, L. and Dietel, T. and Djawotho,P. and Dogra, S.M. and Dong, W.J. and Dong, X. and Draper, J.E. and Du, F. and Dunin, V.B. and Dunlop, J.C. and Dutta Mazumdar, M.R. and Eckardt, V. and Edwards, W.R. and Efimov,L.G. and Emelianov, V. and Engelage, J. and Eppley, G. and Erazmus, B. and Estienne, M. and Fachini, P. and Fatemi, R. and Fedorisin, J. and Filimonov, K. and Filip, P. and Finch,E. and Fine, V. and Fisyak, Y. and Fu, J. and Gagliardi, C.A. and Gaillard, L. and Ganti,M.S. and Ghazikhanian, V. and Ghosh, P. and Gonzalez, J.S. and Gorbunov, Y.G. and Gos,H. and Grebenyuk, O. and Grosnick, D. and Guertin, S.M. and Guimaraes, K.S.F.F. and Guo,Y. and Gupta, N. and Gutierrez, T.D. and Haag, B. and Hallman, T.J. and Hamed, A. and Harris, J.W. and He, W. and Heinz, M. and Henry, T.W. and Hepplemann, S. and Hippolyte,B. and Hirsch, A. and Hjort, E. and Hoffman, A.M. and Hoffmann, G.W. and Horner, M.J. and Huang, H.Z. and Huang, S.L. and Hughes, E.W. and Humanic, T.J. and Igo, G. and Jacobs,P. and Jacobs, W.W. and Jakl, P. and Jia, F. and Jiang, H. and Jones, P.G. and Judd, E.G. and Kabana, S. and Kang, K. and Kapitan, J. and Kaplan, M. and Keane, D. and Kechechyan, A. and Khodyrev, V.Yu. and Kim, B.C. and Kiryluk, J. and Kisiel, A. and Kislov, E.M. and Klein,S.R. and Kocoloski, A. and Koetke, D.D. and et al.},
abstractNote = {We present STAR measurements of the azimuthal anisotropyparameter v_2 for pions, kaons, protons, Lambda, bar Lambda, Xi+bar Xi,and \Omega + bar Omega, along with v_4 for pions, kaons, protons, andLambda + bar Lambda at mid-rapidity for Au+Au collisions at sqrt sNN=62.4and 200 GeV. The v_2(p_T) values for all hadron species at 62.4 GeV aresimilar to those observed in 130 and 200 GeV collisions. For observedkinematic ranges, v_2 values at 62.4, 130, and 200 GeV are as little as10 percent-15 percent larger than those in Pb+Pb collisions at sqrt s NN=17.3 GeV. At intermediate transverse momentum (p_T from 1.5-5 GeV/c),the 62.4 GeV v_2(p_T) and v_4(p_T) values are consistent with thequark-number scaling first observed at 200 GeV. A four-particle cumulantanalysis is used to assess the non-flow contributions to pions andprotons and some indications are found for a smaller non-flowcontribution to protons than pions. Baryon v_2 is larger than anti-baryonv_2 at 62.4 and 200 GeV perhaps indicating either that the initialspatial net-baryon distribution is anisotropic, that the mechanismleading to transport of baryon number from beam- to mid-rapidity enhancesv_2, or that anti-baryon and baryon annihilation is larger in thein-plane direction.},
doi = {10.1103/PhysRevC.75.054906},
journal = {Physical Review C},
number = ,
volume = 75,
place = {United States},
year = {Sat Jan 06 00:00:00 EST 2007},
month = {Sat Jan 06 00:00:00 EST 2007}
}